Eaton Series NRX - Hybrid Connected Configurations

10
Instruction Leaet IL01301015E
Effective November 2016
Installation instructions for Series NRX
Type NF frame xed breaker rear connect,
front connect, and hybrid congurations
EATON www.eaton.com
As an option, customers can order a terminal shield to install at the
line side of the front connect breaker (Figure 23).
Figure 23. Terminal shield installed on a front connect breaker
5. When making the cable terminal connections, properly torque
the cable retaining screws and periodically check all mounting
hardware for proper torque loading. Refer to Figure 24 for rope
lacing support instructions.
To remove the cable terminals, reverse the procedure
described above.
NYLON
6 INCHES
(152 mm.)
ROPE
EXCEPTION: Not required
when installed in Panelboards
or Switchboards using
busbar connections.
Unsupported cables can cause
minor personal injury or
equipment damage under short
circuit conditions.
Wrap breaker cables with 3/8 inch
nylon or equivalent rope as shown
in Figure having a minimum
tensile strength of 2000 pounds at
6 inches from terminals and every
additional 6 inches with five wraps
or every additional 1 inch with
one wrap.
CAUTION
66B2609H01
Figure 24. Rope lacing instructions
Hybrid connected congurations
The hybrid breaker configuration family of rear-fixed adapters
(Table 1) and front-fixed connectors (Table 2) may be used
interchangeably on the line side or load side of the breaker.
Figure 25 and Figure 26 show two of the most common
configurations. For proper installation procedures, please refer
to pages 3–9 of this manual or contact the Eaton production
facility for further information.
Figure 25. Typical hybrid configuration 1 using connectors
on the line side and adapters on the load side
Figure 26. Typical hybrid configuration 2 using adapters on the
line side and connectors on the load side